TY - Journal of Geographical Sciences A1 - CHEN Yunhai, JIANG Nan, CAO Yibing, YANG Zhenkai, ZHAO Xinke T1 - Visual method of analyzing COVID-19 case information using spatio-temporal objects with multi-granularity Y1 - 2021-09-25 00:00:00.0 JF - Journal of Geographical Sciences JO - Journal of Geographical Sciences SP - 1059 EP - 1081 VL - 31 IS - 7 UR - {https://www.geogsci.com/EN/10.1007/s11442-021-1885-1} N1 - 10.1007/s11442-021-1885-1 ER -